Pipe connection.



Patented 1an. I4, |902.

A. w. CRAM,

PIPE CONNECTION. (Application led Mu. 28. 1901.)

(No Model.)

Wittmann u: Non!! Pzrzns cov. PHomLlTwu.. wAsHmarcN n c UNITED STATES-PATENT OFFICE.

ALONZO W. CRAM, OF HAVERHILL, MASSACHUSETTS, ASSIGNOR TO WILLIAM D.CRAM, OF HAVERHILL, MASSACHUSETTS.

PIPE CONNECTION.

SPECIFICATION forming par-tof Letters Patent N o. 691,246, dated January14, 1905?..v Application inea Mach 2s, 1901. serai No. 53,246. (Nomodela To @ZZ whom it may concern:

Beit known that I, ALONZO W. CRAM, a citizen of the United States,residing at Haverhill, in the county of Essex and Stateof Massachusetts,have invented new and useful Improvements in Pipe Connections, of whichthe following is a specification. Y

My invention relates to improvements in pipe connections, and pertainsto an improved connection which is especially intended for use inconnection with sewer-pipes, though it is adapted for use in fittings ofall kinds where it is desired to remove one section of the pipe forinserting a clean-out', replacing an injured or cracked section, orinserting a section with a Y or a T, all of which will be fullydescribed hereinafter, and particularly pointed out in the claims.

The obj ect of my invention is to avoid the necessity of lifting upseveral sections of a line of pipe Where the end of one section of pipefits into the adjacent end ofVV the other section when it is desired toremove one section and to replace it by another section for any reason.

Where a line of piping consists of a plurality of sections Which vhavetheir ends telescoping or tting one within the other in order to removea section and replace it by another, it has been necessaryl to loosen upnumber of the sections in order to insert another section, whichnecessity my present invention avoids.

In the accompanying drawings, Figure l is a longitudinal sectional viewof a line of piping, one section of which embodies my invention. Fig. 2is an enlarged sectional view of my improved pipe connection. Fig. 3 isa cross-sectional view on the line 3 '3 of Fig. 1, showing the cover forthe clean-out and the clamping-yoke in position. Fig. 4 is a sideelevation of my improved pipe-section, showing the specific location ofthe lugs for the engagement of the clamping-yoke. Fig. 5 is alongitudinal sectional view of a line of piping Without my improvedsection, showing several sections of pipes moved to one side in dottedlines in order to insert an old form of section.

Referring now to Figs. 1, 2, 3, and 5, A is the ordinary form ofpipe-section, having at one end the enlarged or hub portion B forthereception of the smaller end C oi' the adjacent pipe to allow .thespace a for calking purposes, as is well understood by those skilled inthe art.

My improvement consists of a section D, which has one end provided witha boss b, the said boss being screw-threaded and adapted to receive theinternally-screw-threaded end c of a connecting screw-hub F. This hub Fhas its opposite end d enlarged to correspond With the enlargement B ofthe section A and isv adapted to receive the smaller end kof the saidsection, as illustrated, and to provide the calking-space e, theequivalent of the calkiugspace a formed in the ordinary pipe-section.The internally-screW-threaded end c of the hub F is of such size thatthe hub can be moved endwise upon the smaller end of one of thepipe-sections A, as shown in dotted lines, Fig. l, for the purpose ofenabling my improved pipe-section D to be placed in position. When ithas been placed in position, the hub F is then screwed to the kpositionshown in solid lines, Fig. l, when the calking operation can beperformed and the connection Acompleted. The hub F is provided'with aplurality of longitudinally-extending ribs f, constituting shoulders forthe engagement of a Spannerwrench of any desired form for the purpose ofturning the hub to its position upon the end 'of the pipe-section D.Also the pipesection D is provided with several shoulders or projectionsg,with which a Spanner-Wrench is adapted to engage for the purpose ofholding lthe pipe-section .against turning while the screw-hub is beingturned to its position thereon, i

The particular object of my invention is to simplify and to cheapen theinsertion of a new pipe-section in a lineof piping When it is necessaryto remove one lsection of the line of pipe for any purpose. Forinstance, should one of the sections of a line of pipe become broken orotherwise injured, thus making it necessary to remove` it, it would onlybe necessary to cut out or to break out the injured section, withoutdisturbing the other sections of the pipe, and to insert my improvedsection by first placing the screwhub F upon the smaller end of thepipe-sec- IOO tion A, inserting the end h of my pipe-section into theenlarged portion B of the other section of the line of pipes, andbringing my improved section in alinement, and to then turn thescrew-hub to position. It is only necessary then to calk the connectionsat opposite ends of my improved pipe-section and coupling and the job iscompleted. This is a great saving in time and labor, and henceconsiderably cheaper than the usual method required to replace a sectionof piping of the old form, and which is illustrated in Fig. 5. When thepiping is of the old form, it is necessary to loosen several sectionsand to move them out, as indicated in dotted lines, Fig. 5, for thepurpose of permitting the insertion of another section.

breaking of the yoke I, which sometimes occurs 1n forcing a cover of theordinary convent leaking.

struction to its seat sufficiently tight to pre- In this instance I alsoplace the projections .I upon the side of my improved section at a pointabove the center of the section, as shown in Fig. 4, so that a shorteryoke I can be used than Where the projections are situated at a centerline, thus very materially.strengthening the yoke, as will be readilyunderstood. The matter of castingthe section with the projections atthis point will be readily understood by those skilled in the art ofcasting and does not need explanation here.

My invention is also useful when it is desired to insert in a line ofpiping either a Y' or a T, and in .which event my improved section willbe of the Y orof the T form instead of the clean-out form, as will bereadily understood. In every instance, however, it will be seen thatthere is great saving of time and labor in placing my improved sectionand connection in a line of piping as compared with the old method ofdoing this.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. A pipe connection comprisinga pipe-section having at one end ascrew-threaded portion, its opposite end adapted to enter the adjacentlarge end of another pipe connection, and a screw-hub adapted to bescrewed upon the screw-threaded end ofthe section, the opposite end ofthe hub being open to receive the adjacent end of the succeeding pipeand constituting a calking-space, substantially as described.

2. An improved pipe connection consisting of a pipe-section having oneend adapted to coact with the adjacent'end of another pipesection, theopposite end of the section being screw-threaded, and a screw-hub havingone end internally screw-threaded and of a size adapted to pass over thesmaller end of the adjacent pipe-section, the opposite end of the hubbeing open and surrounding and constituting a calking-space between theinterior of the hub and the exterior of the adjacent pipe-section,substantially as described.

3. An improved pipe connection consisting of a pipe-section having atone end an externally-screw-threaded boss, and a hub having aninternally-screW-threaded end adapted to engage the 'screw-threadedboss, the opposite end of the huo being open and surrounding andconstituting a calking-space between it and the adjacent end ot thepipe-section, substantially as described.

4. An improved pipe connection consisting of a pipe-section having oneend screw-threaded, a wrench-shoulder, and ahub having one endinternally screw-threaded to receive the screw-threaded end of the pipeconnection, its opposite end being open and surrounding and constitutinga ca'lking-space between it Vand the end of the adjacent pipe-section,the

exterior of the hub provided with aplurality of Wrench-shoulders,substantially as described.

In vtestimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

vALONZO W. CRAM.

Witnesses:

ARTHUR W. MITCHELL, CHARLES J. I- IALPEN

